C2 1963-1965 Corvette 2.5in Exhaust Manifolds - 327 - Replacement - LH/RH

Restore authentic performance and dependable exhaust flow to your 1963–1965 Corvette with this complete 2.5" exhaust manifold set designed for the 327 smallblock. Featuring both lefthand (LH) and righthand (RH) manifolds, this replacement kit provides a direct path back to proper exhaust routing while unlocking improved breathing for your C2’s venerable smallblock engine.

Key features that set this apart

• Complete LH and RH set a true replacement that ensures correct fitment on both sides of the 327equipped C2 Corvette.
• 2.5inch outlet diameter larger than stock manifolds to reduce back pressure and support smoother exhaust flow, helping the engine breathe more freely under load.
• Direct compatibility designed to integrate with the factory exhaust configuration, making installation straightforward for restoration or repair projects.
• Durable cast construction built from cast metal to withstand heat and daily driving, delivering lasting performance in classic V8 applications.
• Functionally correct design maintains correct routing and spacing for 327 cubicinch V8 engines used in 1963, 1964, and 1965 Corvettes, preserving authenticity while upgrading reliability.

Why this upgrade matters

Old or damaged exhaust manifolds can crack, leak, or warp, robbing your engine of efficiency and a clean exhaust note. Replacing with a 2.5" manifold set not only restores original geometry but also supports improved exhaust scavenging. For restorations or ongoing maintenance, these manifolds help your 327powered C2 achieve better throttle response, more consistent idle, and steadier performance across the RPM range without altering the rest of the exhaust system.

Ideal for

• 1963–1965 Corvette owners performing engine restoration or exhaust repairs
• Repairing cracked, rusted, or damaged manifolds while preserving factory compatibility
• Upgrading from smaller stock manifolds to improve exhaust flow on a 327 smallblock

Practical considerations and tips

These manifolds are designed for a straightforward direct replacement, aligning with the factory exhaust setup. When installing, ensure gaskets and hardware are compatible with the 2.5" outlet configuration and that the surrounding exhaust components are inspected for any signs of wear or misalignment to maximize sealing and performance.

Compatibility at a glance

• Vehicle: 1963–1965 Chevrolet Corvette (C2) with 327 smallblock engine
• Configuration: Lefthand and righthand exhaust manifolds included
• Outlet size: 2.5 inches for improved flow and breathing
• Purpose: Replacement or restoration, maintains factory exhaust routing

With this LH/RH 2.5" exhaust manifold set, you’re not just replacing worn componentsyou’re restoring the engine’s ability to breathe properly, reclaiming original character, and delivering dependable performance for your midyear Corvette.